20 pesos  185 x 79 mm

CHIH-111  Serie K  Front: Date Enero 1915 under Serie letters l. and r.

          a.  Back: Black horizontal scalloped treasury seal and control letters.  PS537a  

               Common.  Known control letters: 

               E-GCR; E-NG; I-NVT; I-UT; S-CBII; S-ECA; T-ECA; T-ERU; T-USB; T-SB;

               T-SR; U-ROG; U-TR; V-SPH; Y-NTV.   

          b.  Back: Black horizontal scalloped treasury seal and control letters with date at center.

               PS537b  Common.  Known date / control letters: 

          c.  Back:  Black Vertical scalloped treasury seal and control letters.  Scarce.  Known

               control letters:  U-ROG;  Y-NTV 

EL ESTADO DE CHIHUAHUA

3.27.15   / ERA-N; / P-WRU; / Q-MVX; / R-NZY; / S-PKZ; / S-WXI; / T-XYJ;

               / U-YZK

4.1.15    / JLH-A; / IPR-B; / MDV-E; / W-XLT; / X-YTL; / Y-ZLM *; / Z-BMV

4.12.15   / CGA-D; / ESF-C; / ESF-G; / MDV-E; / MTP-F; / PAZ-G; / SAN-H

4.20.15   / MAR-I

5.1.15     / QKG-J

5.10.15   / CAQ-K; / ERA-N; / PED-O; / RAU-L; / SAL-M

5.20.15   / CGD-P

6.10.15   / ATA-R; / CAS-Q; / MAR-T; / MIN-S

6.20.15   / JUE-Z; / MEN-U;  / MUE-Z; / PUL-X; / PUT-W; / SIR-V; / STU-Y

7.1.15     / LUZ-C

7.10.15   / CON-V; / E-NC; / IO-N; / MM-AR; / NN-FV; / OO-GT; / PP-NA

7.20.15   / MM-AR; / NN-FV; / NN-VF; / OO-GT; / PP-NA

          e.  Back: INVERTED Black horizontal scalloped treasury seal and control letters with

               date at center.  PS537f  Scarce.  Known date / control letters:

               4.12.15  SAN-H

               5.10.15  / ERA-N

          f.  Back: BLANK with Black scalloped treasury seal and control letters.  PS537d Scarce

          g.  Back:  Without seal.     PS537c  Scarce

          d.  Back:  Black Vertical scalloped treasury seal and control letters with date at center.

               Scarce.  Known date / control letters:

3.27.15  / P-WRU

4.1.15    / JLH-A

4.12.15  MDV-E

4.20.15  / MAR-I

6.20.15 / SIR-V

7.10.15 / IO-N

*  One example (SN: 3503638) seen with stamp PAGADO on the front.